A Value for the Faraday Based on a High-Precision Coulometric Titration of 4-Aminopyridine
In the two most recent least-squares adjustments of the fundamental physical constants, B. N. Taylor and his co-workers, 19691 and 19732, call repeatedly for a further experimental determination of this constant. The existing value, 96,486.67 1972 NBS coulombs per mole is based on the silver dissolution work of Craig, Hoffman, Law and Hamer3, and although closely supported by coulometric titrations of benzoic acid4 and of oxalic acid4, it is greater by some 21 ppm than a value calculated from other physical measurements.
KeywordsPotential Drop Abundance Ratio Coulometric Titration Perchloric Acid Solution Freezing Curve
Unable to display preview. Download preview PDF.
- 1.E. N. Taylor, U. K. Parker and D. N. Langenberg. Rev. ‘Modern Phys., 41, 477 (1969).Google Scholar
- 3.D. 7. Craig, J. I. Koffman, C. A. Lay and TT. J. Hamer. J. Res. Natl. Bur. Stand., 64A, 381 (1960).Google Scholar
- 4.G. Marinenko and J. K. Taylor. Anal. Chem., 39, 1568 (1967).Google Scholar
- 5.F. R. Kroeger, W. C. Foyle, C. A. Swenson and H. Diehl. To be published in Talanta during 1975.Google Scholar
- 6.E. L. Ecbfeldt and B. TT. Shaffer, Jr., Anal. Chem., 37, 1534 (1965).Google Scholar
- 8.J. Knoeck and F. Diehl. Talanta, 16, 569 (1969).Google Scholar
- 9.W. F. Koch, D. P. Poe and K. Diehl. To be published in Talanta during 1975.Google Scholar
- 10.W. C. Hoyle, ‘7. F. Koch and H. Diehl. To be published in Talanta during 1975.Google Scholar
- 11.N. F. Koch, K. C. ‘Hoyle and K. Diehl. To be published in Talanta during 1975.Google Scholar
- 12.A. K. Yapstra and I. B. Cove. Nucl. Data, Sect. A., 9, 265 (1971).Google Scholar